The only way to fix the spar is to change the whole center section wing spar. After adding F-415a/b ribs (R&L) to the fuselage I measured a slightly longer distance between the main wing sparand the rear wing spar attach point previously built. Flip the wing over and repeat for the other side. After a wing is sealed, the spars disappear from sight. An aircraft wing is mainly subjected to lift, fuel, engine, landing gear, inertial, structural, nonstructural and other aerodynamic loads. 173rd Fighter Wing Search. Larger aircraft, either military or commercial, require fuel cells in the wing structure. I thought the wing spar issue was Baron-Bonanza fleetwide. #aircraft #airfoil #airplane #aseembly #blades #helicopter #metal #model #ribs #rod #rods #spar #wing Explore the world’s largest, free 3D model library, but first, we need some credentials to optimize your content experience. Then return the main Wing Construction page, here. 9 hour aircraft had corrosion in one of the bolt holes that required special attention from Piper Engineering. The internal wing, structure, consisting of spars, ribs and stringers, and the external wing, which is the skin. By Julie Boatman. Indeed, the complete spar’s sizing is validated by static rupture tests. Definition. I tried the P51SIG site and I guess you have to be recommended to the site for membership. 00 Call to order. Specifications. - total of man hours: 50 2. 1) Rotating masts, also called “teardrop masts”, or “wing-mast sections” (as on Formula 28 and 40) and 2) fixed masts. Beech kits P/N 23-4008-1, -2, -3, and -4 make repairs to the wing outboard spar areas on all Models 19, 23, and 24/24R. Inertia relief can be used to reduce the effective wing shear and bending loads, on the basis that. On 14 September 2010, FAA wrote a letter (original version, updated version) to SSA containing factual information about the accident glider, the construction of the wing spar, inspection methods, and the justification for AD 2010-18-05. This prevents the use of a through spar and adds a weak point in the center of the wing. The Airbus-designed wing for the A350 wing is a largely composite assembly, though with ribs, internal frames and certain other sub-structures of metal. 1 x SonicModell Mini AR. the main spar with miss drill damage: –DEF STAN 00 970: Consistent with fatigue management of other RAAF PC-9 wing locations, an inspection threshold derived from FSFT results however main spar cracking adjusted to account for presence of worst case miss-drill damage based on crack growth modelling. The bulletin mandates eddy current inspection of the spar by personnel with NAS 410 Level II or Level III. Mark both the front and the rear spar. US20060145010A1 US11/297,612 US29761205A US2006145010A1 US 20060145010 A1 US20060145010 A1 US 20060145010A1 US 29761205 A US29761205 A US 29761205A US 2006145010 A1 US2006145010 A1 US 2006145010A1 Authority US United States Prior art keywords wing spar cover airplane welded Prior art date 2004-12-07 Legal status (The legal status is an assumption and is not a legal conclusion. Cessna Cardinal Wing Spar Carry Through. FAA proposed twin Cessna wing spar ADs The issue: On May 15, 2003, the FAA proposed two airworthiness directives mandating inspection of twin Cessna wing spar caps for fatigue cracks and installation of a Cessna manufactured spar strap modification kit. Piper Aircraft has issued Service Bulletin 1345 requiring inspection of the main wing spar on Piper Arrow models to test for unseen cracks in the spar. The Center spars are also going bad, we have had to reject two Tiger, one Cheetah, one AA-1, and one Traveler center spar from intergranular corrosion. Here is a quick-and-dirty description of the method Norbert Kramer used to make the main wing spar. The template with some fittings attached. A devastating call to be sure, but […]. In design and finite element analysis of aircraft wing using ribs and spars, an aircraft wing is designed and modeled in 3D modeling software Pro/Engineer. on the location of the wing spar, the worst-case torsion load may be present at high or low angles of attack (aft or forward centre-of-pressure respectively). Aviation News March 2, 2020. 125" thick plates 5 1/2" long, rear spar plate is 3" tall, rivet spacing is 1/2", 1/4" edge distance and 3/8" between rows. 1 and carries a uniformly distributed load of 15 kN/m along its complete length. Multiple variants of this rifle exist, each suitable for a different role. The next thing I needed to do was lay the formers that would hold the shape of the airfoil while simultaneously housing the wooden spar. per quarter section. Both aboard died and the airplane was destroyed. according to the bending moment load path. Click here to read the Wing Spar log entry. Choose White or Black. Flip the wing over and repeat for the other side. The FAA has issued an airworthiness directive regarding severe corrosion and cracking on Cessna 210 carry-through spars. When other structural members of the wing are placed under load, most of the resulting stress is passed on to the wing spar. Spar Straps Way back when, there was some concern about wing bolts in the 90 series King Airs, and it was handled in a similar fashion to the 200s. RE: Wing spar stress calculations triumph406 (Aerospace) 11 Jan 06 17:44 If the designers haven't done any stress calculations, it probably means that they weren't capable of doing the calculations in the first place. Page 24: Sheet The Top Of The Wing Panels 6. The completed spars. There were several B-25's and this lone A-26 flying a figure 8 pattern with the A-26 being the last in line. The wing structure is based upon the customary two spars which are, however, far from conventional in construction. All of these parts are designed for use with a 3mm or 5mm foam board skin. The wing tips will be solid foam appliances. Rainbow Flying Service received Parts Manufactures Approval (PMA) for our new design wing SPAR for the 7 and 11 Series Airplanes and the 8 GCBC Scout. It does not come with decals but I would rather paint it anyway. Then position the wing ribs in place, gluing them with thin CA glue. Sanya Maria Gomez[4] has analysed wing components like ribs, spars and panels of hypersonic aircraft using FEM considering both isotropic and composite materials. A D-Tube style wing is sheeted from the main spar to the leading edge on both the top and the bottom of the wing. With the P2s coming up on their flight hour limits I don’t think Neptune will want to invest that kind of money in bringing Tanker 10 back into service. Cut to fit. The AD prompts inspection and mitigation in a range of models. A member of the women's reserve of the US Coast Guard, disbanded as a separate unit in 1946. A wing spar joint is provided for coupling the inboard ends of a right wing spar and a left wing spar. Search this site. Top wing inspection covers could leak, cause water damage to the spar, and result in structural degradation of the wing; 2. spar - a stout rounded pole of wood or metal used to support rigging. I tried the P51SIG site and I guess you have to be recommended to the site for membership. Both the spar and a compression rib connect the wing to the fuselage. The refurbishment of the second aircraft's centre wing will begin in Edmonton in August of this year, with the assembly of the all-new lower wing surface. On 14 September 2010, FAA wrote a letter (original version, updated version) to SSA containing factual information about the accident glider, the construction of the wing spar, inspection methods, and the justification for AD 2010-18-05. The issues were so serious and wide spread there was potential the wing would be condemned. They often have 31″ spar spacing (The Piet is 29″) and have the spars at 15 and 65% of the cord. 14 Add to Cart. Now here is the tricky part. To ensure. Photo of old spar with cracks and bent ribs. This can give you a good idea of which way to go. Riveting the spar from end to end will take two mechanics just over a day. The template with some fittings attached. The ribs give the wing its cambered shape and transmit the load from the skin and stringers to the spars. Only an airplane with a main wing spar that has a factored service life of 5,000 hours, has had either main wing spar replaced with a serviceable main wing spar (more than zero hours TIS), or has airplane maintenance records that are missing or incomplete, must have the eddy current inspection. Univair and WagAero sell these kits. com FREE DELIVERY possible on eligible purchases. Replacement Wing Spars. The spar repaired with this procedure is stronger than the original "B" version, as per tests conducted in "CRITT de Rochefort" (cf picture). 86 Add to Cart. 5ml Hot English mustard. Non-compliance with this service letter may result in undetected crack(s) in the carry-thru spar, which can result in structural failure of the carry-thru spar. It will get lots of use. The completed spars. 040 inch aluminum. MAIN WING SPAR LOWER WING BOLT REPLACEMENT AND TENSION CABLE PER T-34 SPAR CORP. According to the FAA, the proposed AD is the result of preliminary investigations that revealed fatigue cracking of a lower main spar cap on the subject aircraft. Also included are the only other pieces that require bending on an eight foot brake. Before I did this, I called Van's builder support line to ask two questions: 1. In general, Avid Flyer wing differences extend to spar thickness, spar length, lift strut o. You may not agree with how. A single-web spar became possible because de Havilland developed a method of forming a birch multi-ply web turned over at right-angles along its upper edge so as to pick up the shear load directly on to the upper skin of the wing. After these rivets were set, I was tired of riveting, and decided to leave the skin to spar rivets in the right wing for another day. Such a wing spar is frequently composed of a top chord and a bottom chord as well as a middle web therebetween. Compression cracks have been found emanating from the upper and lower surfaces of the front and rear wing spars at both ends of the reinforcement plate for the lift strut attachment. As Glasair ships the wing it comes with the entire bottom skin bonded to the main spar. 00 + S&H This Set has three pieces, the Front & Rear Spars and Mounting Base. Spare part for SonicModell Mini AR. Impact of Sweep Angle on the Critical Mach Number The greatest benefit of wing sweep is a reduction in the strength of and delay in the onset of shock formation. SPAR new store sets and store remodeling services also extend to downsizing, closings and major store reflow initiatives. The slot is the full 17" length of the spar and goes nearly all the way to the top side of the wing. , C-172, C-182, C-206) there are a whole lot of planes for sale at any given time, and if the prices of those planes have gone up or their availability went down over the last few years it’s been a subtle change. Both the spar and a compression rib connect the wing to the fuselage. the designer's consideration than compression strength, as the wing spar foam web is placed under longitudinal shear forces more than anything else. Fiberglass Wing Spars-Fiberglass spars! These long, solid tubes of fiberglass are used to strengthen our Legit Wing aircraft, as well as many other purposes. 220) in each spar cap. Both these components must be resistant to bending and torsional deflection if the aerodynamic integrity of the plane is to be preserved. August 6, 2007: Finished riveting right wing skeleton : Pulled left wing off jig, mounted right skeleton. I then feed the spars through the table saw to cut the angle in the top of each spar. WING STRUCTURE has axial members (stringers), bending members (spars), shear panels (spar web, skin), ribs (in-plane. Search 173rd Fighter Wing: Search. The wing strut attaches at the wing splice joint. 2 Choice of architecture E-Fan prototype 1. They have NEW Spar Caps, Extensions, 230 gal fuel, Heavy Duty Leading Edge Skins and Ribs, Wing Tips, Nav and Strobe lights, and YOU PICK THE NEW PAINT COLOR!. We have finished one wing replacing the front spar and lift struts. Wing Spar Options: Training Home - Go Back This video shows a detailed description of how to setup a job, import a vector file, and then setup a simple profile toolpath to cut the part out. BEECH 18 SPAR CORROSION AND CRACKING. 00 out of 5 based on 1 customer rating (1 customer review) Wing spars are a critical piece in construction of any airplane; they are the backbone of your wing, and have the strength to keep your airplane in the air! Contrary to popular belief, spars are not impossible for the home builder to undertake, but they. The strength of the Menestrel's wing,lies within the dual laminated spar-caps, The two spar booms are similar in construction to the leaf springs found on road vehicles, For instance the top spar has a depth of 72mm over the centre section gradually reducing to just 6mm at the wing tip. I wanted to keep things as simple as possible. Once the spars are marked assemble the "N" strut. Wing Kits with Metal Spars: Please contact us for prices (prices start at $5,500 and go up to $11,000) Available wing kits: Piper with flaps optional: J-3, J-5, PA-11, PA-12, PA-18, PA-20 and PA 22" Taylorcraft with flaps optional Taylorcraft with flaps. Simply remove 3" and its a perfect fit. carl +1, you can find some pretty good wood in the bins if you look enough. 060 top and 0. I want to bulid the wing spar and wheel wells for the MPC 1/24th Mustang. Instead of wing joints, an unusual feature is that the spars are continuous from tip to tip. The above 4 shots show N7079G at Holman Field during work to repair her wing spar. The two individual spars are then replaced with a central spar from 50% to 100% span. PIPER METAL WING SPARS Piper Metal Wing Spars: Piper J-3, PA-11, PA-18-95 - FAA/PMA approved. Our spar blanks are 17' extruded 6061 T-6 aluminum. extremely strong wing spar. This tool provides a fully functioning automated low pressure RTM system for the composite wing spar. This achievement represents the latest miles. This non-destructive inspection method captures "before" and "after" images, which will be closely examined following wing structural tests (aka wing bend tests). 00 + S&H This Set has three pieces, the Front & Rear Spars and Mounting Base. The spar carries flight loads and the weight of the wings while on the ground. Hope that helps, Kind regards, Dave. 5 degrees and joined by two 1/8-inch splice plates. During the initial production years these parts were completely manually assembled. Specifically, look at the wing-fuselage attach points on the spars in this area for rot. It was at the CAF airshow where 7079G (re)broke the spar. January 21, 2008. After setting the rivet, the factory head has a. Authors: Juan Reuben Lazarin*, and Eltahry Elghandour** Students at the Cal Poly Department of Mechanical and Aerospace Engineering were tasked with the challenge of ensuring that a wing structure is within design limits. 2520 Total Airframe, 320 Hours SMOH, 320 Hours SNEW Prop !, Garmin 430 WAAS GPS, Garmin GTX 330 Digital Transponder, King KFC 200 A/P w/ Altitude Hold, Mode “S” Traffic, Sandel Digital HSI, KCS 55A Slaved HSI, Paint 8 out of 10, Interior 7 out of 10, Always Hangered, Complete Logs!. Please purchase for your use and I recommend you have the spar re-checked by your mechanic. Hole Duplicator For the overlapping section, I made a hole duplicator so that both skins and the wing rib would all be match drilled. I Two tapering box spars were used in the construction of the cantilever wing; the front spar was swept back towards the wing-tips from the connecting points of the center-section struts, the rear spar was straight. A wing spar joint is provided for coupling the inboard ends of a right wing spar and a left wing spar. 4 1 1/2 " Rear Wing Spar Aileron Inboard aileron hinge Control horn Top view 1 2 3 1. Define spars. Construction of the wings began at the very beginning when the full span spar was added but now we'll flesh them out. WING SPAR SET FOR FW200C-4 $14. Other structural and forming members such as ribs may be attached to the spar or spars, with stressed skin construction also sharing the loads where it is used. Larry Balla. Here are the compression members that keep the spars separated in flight! Aileron cross bracing structure. Spacer Wing Spar NSN Parts List ASAP3Sixty is one-stop-shop for parts applicable within the aerospace and defense industries. The wing spars were rather simple to complete. Hidden inside the wings are a critical aircraft component: wing spars. The rear spar is a U-shaped component, running from root to tip of the wing, and forms part of the wing box and has the fixed trailing edge components bolted to it, including several moving components, such as the flaps that slide out on take-off and landing, and the main landing gear. Wing Construction. Avios C-130 - Wing Spar. This is because the weight is usually much higher than scale. Impact of Sweep Angle on the Critical Mach Number The greatest benefit of wing sweep is a reduction in the strength of and delay in the onset of shock formation. Author: Will Ware. 00 + S&H This Set has four pieces, the Front bulkhead (F) & Rear bulkhead (R) and two identical wing spars. The proposed ADs affect twin Cessna 401, 402, 411, and 414A airplanes. · (obsolete) A bar of wood used to fasten a door. Today I measured and marked the cuts needed for the right wing's dihedral. Specs: Length: 300mm Diameter: 5. That replacement spar has. The wing concepts are classified. The Center spars are also going bad, we have had to reject two Tiger, one Cheetah, one AA-1, and one Traveler center spar from intergranular corrosion. Marty N367PS Psalm 36:7 "High and low among men find refuge in the shadow of His wing" www. Drilled Left Rear Spar, Round Tip 16-Rib PA-18 - FAA/PMA approved. Boeing's latest innovation in the travel field is an extremely thin, folding wing that will offer unprecedented aerodynamic efficiency, according to a news release from the company. The Twin Cessna Wing Spar ADs site posted below is devoted to the collection and dissemination of information related to the FAA's proposed ADs. Textron Aviation issued service letter SEL-57-06 in June 2019 and SEL-57-08 in […]. Please purchase for your use and I recommend you have the spar re-checked by your mechanic. RE: Wing spar stress calculations triumph406 (Aerospace) 11 Jan 06 17:44 If the designers haven't done any stress calculations, it probably means that they weren't capable of doing the calculations in the first place. and the main spar represents 80% of the wing's total strength, a complete wing can support 1100 lbs. Hope that helps, Kind regards, Dave. We also found that the wing had at some time been trashed and rebuilt , we think you did not do this work as there are no log book entries to cover it. In addition to wing length, material and construction differences, the under-cambered HH rib profile was very different from the flat-bottomed Speed rib profile. class aviation grade pine wood. Twin Cessna Wing Spar ADs The Twin Cessna Wing Spar ADs site posted below is devoted to the collection and dissemination of information related to the FAA's proposed ADs. This spar was included in other parts I bought at auction. Wing Span: 42 inches Chord: 7 inches Static angle of attack: 4. Several layers of 2024-T3 doublers were riveted together in this area to support the high loads. 062 to the wing spar and get it to fit in the present center spar. Enough rod for one wing panel (upper and lower caps) requires 112 ft. The first project was to lay up a test wing spar panel to verify the design concept. presents the same constraints like all aircrafts using this kind of propulsion. com FREE DELIVERY possible on eligible purchases. This one supported the spar stub at one end, and the other end supported the leading edges. The twin Cessna spar controversy dates back to 2004 time frame. This research work investigates graphite-epoxy design for light weight high performance structure of an aircraft wing spar using computational techniques. Rear Wing Spar Aileron Fig 3. The tool provides a fully-functioning automated low-pressure RTM system for the composite wing spar being produced through Airbus' Wing of Tomorrow program. Though single-spar construction is normally used for jet aircraft and not light planes, Mooney engineers adopted the design in the early 1960's, when construction moved away from wood wings. As Glasair ships the wing it comes with the entire bottom skin bonded to the main spar. PM me with email address and I'll shoot you the page from the plans. The weld on the trailing edge needs only to hold until you get the wing skinned, and then no weld is necessary at all. Spar (aeronautics) In a fixed-wing aircraft, the spar is often the main structural member of the wing, running spanwise at right angles (or thereabouts depending on wing sweep) to the fuselage. I tried the P51SIG site and I guess you have to be recommended to the site for membership. At each location, place a mark on the tube where the rib will go. The crack they located on this PA-28R-201 measured 0. Also, the secondary spar in the rear is not advertised but is the exact size from the Avanti S. This airfoil was. The tie down blocks have been clecoed to the spar, holes match drilled, nut plates drilled and ready to be attached but first prepared the tie downs for primer and primed. 1 Location of Spars in wing construction Earlier wings were designed with three or more spars because use of several spars format a reduction in rib stresses and majorly used because of space requirement for housing of fuel tank and landing gears. My crew of cheap labor had a great time removing staples. Together, these two structural components collectively provide the wing rigidity needed to enable the aircraft to fly safely. The Renegade bears 67 square feet of sail on a bendy wing spar, making it a powerful racing yacht in a small package. But even at 120 feet long and 28 feet in diameter, it looks small from a perch at the far end of the building. Use the glue sparingly: a small amount will do the job; too much adds extra weight and flows everywhere, making the sanding job more difficult. Ribs give the wing section its shape, and they transmit the air load from the wing covering to the spars. Then return the main Wing Construction page, here. The materials used for aircraft wings are mostly metallic alloys. AMOC-1, Rev. Define spar. The wing is swept forward to solve the CG issue that results from the engine and the two occupants sitting in front of the main spar. Again do not glue. Spar (aeronautics) In a fixed-wing aircraft, the spar is often the main structural member of the wing, running spanwise at right angles (or thereabouts depending on wing sweep) to the fuselage. Here we have the different layers that are placed over the epoxy filled carbon fiber: nylon cloth, porous plastic, and breather. 75-11 oz rtf. A main structural member in an airplane wing or a tail assembly that runs from tip to tip or from root to tip. 220) in each spar cap. 238 x 850 lbs = 202. By Julie Boatman. We recently had to replace the fuel filler gaskets in both tanks and on removing the upper wing skin panels over the tanks discovered a small area of exfoliation (about 1 to 1. The wing strut attaches at the wing splice joint. End of aileron spar must be one and one half inch from end of wing spar. Both the spar and a compression rib connect the wing to the fuselage. It has been a winner and trend-setter ever since its unveiling in 1947, providing many of the design features found in today’s Skeeters. It is positioned perpendicularly to the flight direction and is extended from the fuselage to the wing tip. Univair and WagAero sell these kits. 032 2024-T3 aluminum with 2024-T4 bar stock built up in varying lengths and stacked in varying thicknesses, then riveted top and bottom on the web part of the "C" channel. Pre-Bent Spar Kit: The Sonerai Pre-Bent Spar Kit includes a pair of front and back spars. There is a gap of about 10 to 12 degrees between the two parts. A video of the slots being cut is here. Spar choices: (1) new spars from the "factory" (but the Taylorcraft factory was in start up mode and not able to supply spars, yet able to take deposits on sparsoh,oh!) or (2) new spars from AirRepair (but they were being aquired by WagAero and unable to supply sparsotherwise would have cost about $500 each, 4 required!) or (3) buy spar blanks. The diagram shows two spar structures in a human-powered plane. The SPAR-17 is a selective-fire, short-stroke, gas piston-operated battle rifle with a rotating bolt that is chambered for the 7. 150 Wing Spar Rivets I received a call from an owner of a 1966 150F who said his mechanic had discovered rivet problems in the right wing main spar during annual inspection. I am bulding it out of composite materials and want to replace the wooden spar with a composte one, made out of carbon fiber and either a honeycomb core or foam core. 5 Degrees # of spars: 3 Spar spacing: 5 inches Design Basic Structure. I like these shots. A member of the women's reserve of the US Coast Guard, disbanded as a separate unit in 1946. The general run for pitting is that if any one pit after cleaning out all the corrosion and getting down to new material is to reject the spar if the depth. This set is designed specifically not to require any modifications to the original plastic kit. This picture shows the jig built to level, plumb, and align the spar. steveinindy. The twin Cessna spar controversy dates back to 2004 time frame. Beech 18 truss with the Dee Howard strap installed. Outer Spars Construction of the outer spars is similar to the center spars, except that you need to taper the spar caps front to rear before you laminate them to plywood. The template with some fittings attached. Clamp the wing spar in the new location, put Van's block of wood under the level, and raise the tail of the fuselage until the bubble centers. In design and finite element analysis of aircraft wing using ribs and spars, an aircraft wing is designed and modeled in 3D modeling software Pro/Engineer. Multiple variants of this rifle exist, each suitable for a different role. The FAA has determined that wing damage incidents are the major cause of compression cracks and other spar damage in low horsepower and lightweight airplanes. Glued Ribs to Spars: Wing Ribs 11-20 Completed: Compression Struts: Wing Ribs 21-30 Completed: Drag and Anti-Drag System: Wing Rib Reinforcement: Spar Packing Strips: Scarfed Wing Spar Cap Strips: Rib "Cheek Blocks", New Jury Strut Brackets, Foam Wing Tips: Sanded Wing Ribs: Bending Wing Skins: Front Wing Spar Frames: Gluing Wing Skins: Front. The wing tips will be solid foam appliances. Spars - Struts - Ribs - Components. Toggle navigation. wing spahr-s. 062 to the wing spar and get it to fit in the present center spar. GREAT NEWS-the FAA today issued a change to the Wing carry through spar inspection and eddy current AD (20-03-16) An alternative method of compliance (AMOC) issued by the Wichita office of the FAA has extended the required completion date for the two inspections to September 9, 2020. The A400M and A350 spars: Different by design. There are ten ribs per wing, for a total of twenty. This is also due to the leading edge skin 'Z-brackets' which allow the leading edge skin moment of inertia to contribute to the bending stiffness. The carbon spar for the front of the wings that is shown above is the same spare as the main in the F-18c 90. This morning I got the left wing's leading edge assembly attached to the main spar. The holes in the main spar are a bit sloppy for the AN3 bolts, therefor I “upgraded” to NAS6603 bolts which are a bit thicker and also stronger. I performed a crack check and no cracks are apparent. The Spars are the principal structural members of the wing. We have finished one wing replacing the front spar and lift struts. Make all of your marks first, before attaching any ribs. Roy Williams of Airframe Components shows how to inspect the Piper main wing spar, in Service Bulletin 1304. 00 Plus $25. Distribution of bending moments between spars of a wing 5. Because both later-model Cessna 210s and Cessna Cardinals share a similar wing design, that is, a wing with out struts, the wing spar on both aircraft have to support much higher loads than some of Cessna's other aircraft such as the Cessna 182 and 206 that have a semi-cantilever wing design. I like these shots. Removed from a parted out 1976 Cessna Cardinal 177B, N13380, S/N 17702417 with 5929-6 TAT. The plywood is attached to the wing with iron brads and casein glue. Before the spar would fit, the top edges of the left and right cutout had to be filed for an enlargement of 1/4-inch and 18th inch respectively. Now you know that the wings will fit the airplane when completed. I was able to get all of the rib rivets done solo. for a very reasonable price!! We Sell and Install the Above SPAR CAPS!!!! PLUS. The spar repaired with this procedure is stronger than the original "B" version, as per tests conducted in "CRITT de Rochefort" (cf picture). Hidden inside the wings are a critical aircraft component: wing spars. Very popular with the Nostalgia Top Fuel crowd. Spars running along the length of the wing and connected by a series of ribs By 1917, the Allies had developed a certain degree of air superiority over the Western Front of WWI by means of better biplane construction. Llater, if weight should be minimized, it can be substituted. GKN Aerospace engineers in Germany and the UK have successfully reached the next stage in the development of the A350 XWB 's advanced composite rear wing spar, with the production of prototype composite spars for Airbus' A350 XWB wing box demonstrator. see wing side view. The completed spars. Wing Bending Calculations Lab 10 Lecture Notes Nomenclature L y spanwise coordinate q net beam loading S shear M bending moment θ deflection angle (= dw/dx) w deflection κ local beam curvature ′ lift/span distribution ′ S η normalized spanwise coordinate (= 2y/b) c local wing chord wing wing area b wing span λ taper ratio. Solidworks lofts make ome unespected bulges and wiggles. Sequence of designing calculation 6. As the wing generates the amount of lift equivalent to the total weight of the airplane it needs to be pretty strong. 040" long and deep, and was on the same aft web spar doubler at the wing root. In 1984 Milman Engineering was approached with a request to become the exclusive manufacturer of spar series 7 and 11 replacement conversion kits. The 747-8 will build on the current 747's capability to fly into most airports worldwide, using the same pilot type ratings, services and most ground support equipment. Guest Engarde Guest Engarde. boom - any of various more-or-less horizontal spars or poles used to extend the foot of a sail or for handling cargo or in mooring. With the 2 spars complete, there now had to be a mating process (G rated) to align and connect them. The proposed ADs affect twin Cessna 401, 402, 411, and 414A airplanes. Replacement Wing Spars for Sillosocks Flyers Fiberglass Wing Spars for SilloSocks Flyer and Flappers! products. Spar butt attachment and strut attachment fitting holes are re-inforced with micarta. The wing spar carries the load into the fuselage. A devastating call to be sure, but …. Norbert is a woodworker from way back and managed to complete the spar in record time. They correspond to the longerons of the fuse­lage. The Bearhawk wing spars are built very similar to the Van's RV series wing spars. The Renegade is an excellent boat for those seeking spirited on-design racing. Beech kits P/N 23-4008-1, -2, -3, and -4 make repairs to the wing outboard spar areas on all Models 19, 23, and 24/24R. We have extensive knowledge and experience in composite aircraft construction and specialize in composite wing spars employing graphite rods. Determine the absolute maximum bending stress in the spar if the anticipated loading is to be as shown. 30 Add to Cart. I then feed the spars through the table saw to cut the angle in the top of each spar. By now, every Cherokee owner, from the earliest PA-28-180 to the most recent Arrow, has heard about the inflight wing separation that occurred April 4, 2018, to a Piper Arrow owned by Embry-Riddle Aeronautical University in Daytona Beach, Florida. 90mm EDF F-22 Raptor Wing Spar from Freewing - 070Q001003 Product Questions & Answers NOTE: Questions submitted on this page are answered by customers who have previously purchased this item. 26 Cracked Cessna 402C Right Wing Inboard Engine Beam 29 27 Cracked Cessna 402C Inboard Upper Surface of the Right Wing Outboard Engine Beam 30 28 Cracked Cessna 402C Angle Bracket of the Right Wing Outboard Engine Beam 30 29 Wear on the Cessna 402C Right Wing Front Spar Lower Cap 31 30 Wing Carry-Through Structure 32. Indeed, the complete spar’s sizing is validated by static rupture tests. 00 + S&H This Set has four pieces, the Front bulkhead (F) & Rear bulkhead (R) and two identical wing spars. The Beech 18 wing spar has been a source of many discussions and several airworthiness directives over the years. A first plurality of fasteners secure the forward fitting and the aft fitting together through a web portion of the wing spars. Also started building. They correspond to the longerons of the fuse­lage. Enough rod for one wing panel (upper and lower caps) requires 112 ft. Carbon Wing Spar from FlightLine RC - 056Q001004. ' 'It had a single two-bladed propeller in the front and high wings secured by a pair of metal spars from the bottom of the fuselage, which was white with. Sonerai Works: To place an order: Call us at 414 581 1442 Monday thru Friday - 6 pm and 9 pm Central Time Inquiries can also be directed to: Please email SoneraiWorks at [email protected] A member of the women's reserve of the US Coast Guard, disbanded as a separate unit in 1946. They run from the fuselage (more specifically, wing root) to the wing tip. PA-14 Tank Bay False Spar #1 (Std Tanks) 13-rib wing PA-18 landing light attachment. We have finished one wing replacing the front spar and lift struts. Spar model Spar caps and the spar wall were conected with rivets also made of aluminum alloy 2024-T3 [2]. Traditionally the Champion line of aircraft used wooden wing spars nailed to aluminum ribs as the primary wing structure. The plane we've picked out has corrosion in the right outboard wing spar, and the purchase price reflects such. It is a hollow structure that is filled with fuel. Blue skies,. March 3, 2020. Toward this end, numerical model of AA2024-T3 integral spar was. aircraft wing spar using computational techniques. BEECH 18 SPAR CORROSION AND CRACKING. After setting the rivet, the factory head has a. The corrosion I observed on that plane was much worse than the damage found on the Australian 210 which lost a wing last spring, inciting this AD. Some people use solid 1" spars as shown on the plans. The total weight of the completed wing spar is 7 lbs which includes blocking for root and strut fittings. Re: Broken wing spar In the old Cam 18 regulation it says: A joint in a wood spar has to have a Taper of 20 to 1 = 1 high 20" long. ASI has capabilities for both techniques. The finished spar extends from the wing tip to the wing root and into the spar end - in a 18 m wing about 9. spars synonyms, spars pronunciation, spars translation, English dictionary definition of spars. The spar carries flight loads and the weight of the wings while on the ground. Nut plates were attached after the primer dried. The spars are built up using strips of aircraft aluminum and riveted together. 5 (messy) or to pieces of 3mm plywood (which actually measure 3. Specifications. 1 (2/16/10) © 2009 Zenith Aircraft Co. “The crack that occurred was outboard of the wing attach angles, in the second fatigue-critical location. If may look like there is a ridge under the bracket (from the cap), but it actually sits nearly flush. 25 hrs; completed riveting both spars. We stock 11670-3, 11670-2 of NSN 1560002109318, 1560002109317 from the manufacturer Piper Aircraft Inc as well as the corresponding component Spar Wing False. Composite Wing Stress Analysis Drawings Female Wing Mold. Define spar. Each flange has a cross-sectional area of 500 mm^2 with the top flange being horizontal. End of aileron spar must be one and one half inch from end of wing spar. A typical built up structure consists of longitudinal ribs, which are attached to a leading edge box and to a trailing edge box. The FAA has reported Commanders with spar cracking in as few as 500 hours. But this is an oversimplification, because it ignores the hidden complexities of the wing design. But even at 120 feet long and 28 feet in diameter, it looks small from a perch at the far end of the building. Update: The FAA has extended the compliance deadline for AD 2020-03-16 to September 19, 2020, due to factors related to the COVID-19 virus. These finished laminated wing spars for the Skybolt are ready to use. As currently proposed, they would affect the following aircraft models:. Gain access to the forward wing spar to fuselage and aft wing spar to fuselage attachment fittings. I made up a steel template so that the drilling for the wing spar attachment fittings and strut attachment fittings would be accurately aligned. The proposed AD is a response to the ERAU crash, which involved the inflight separation of the Piper Arrow's left wing. That makes me kind of happy. A wing rib may also be referred to as a plain rib or a main rib. Once the aft spar was attached, I started searching for parts in my big box-o-wing-parts. The wing for the Super 2 is built in three sections. 5˚ along the chord line. Wing Bending Calculations Lab 10 Lecture Notes Nomenclature L y spanwise coordinate q net beam loading S shear M bending moment θ deflection angle (= dw/dx) w deflection κ local beam curvature ′ lift/span distribution ′ S η normalized spanwise coordinate (= 2y/b) c local wing chord wing wing area b wing span λ taper ratio. The wings with the spars installed are incredibly strong. 00 + S&H This Set has three pieces, the Front & Rear Spars and Mounting Base. The completed spars. Sand the spars ends angled to meet flush when joined. WING SPAR SET FOR He177 $14. The ribs are attached to the spars and the ribs produce the airfoil shape. Wing model including the spar and wing ribs used to create the wing. Construction of the wings began at the very beginning when the full span spar was added but now we'll flesh them out. 5ml Hot English mustard. The wing spar provides the majority of the weight support and dynamic load integrity of cantilever monoplanes, often coupled with the strength of the wing 'D' box itself. Most of the inspections called for in the Beechcraft SIRM chapter 57 should take no more than 1 day with at least 1 mechanic to pull the necessary bolts and open up the appropriate areas for inspection and 1 NDT NAS level 2 Technician to perform the NDT inspection. What is the correct dimension for the spars 1" or ¾"? The plans say 1", but the 3 piece wing plans say ¾". Outboard Spar construction. This changed in 1990 when American Champion Aircraft redesigned and certified this structure with aluminum spars. It will get lots of use. When operational for BAe, this single machine will produce up to 16 wing spars at a time, carved whole out of aluminum plate stock in just 25% of the time it now takes using multiple machines and setups. On nine other similar PA-28R-201 aircraft, no cracks were located. How to use spar in a sentence. Several in flight structural failures have been attributed to cracks in the wood spars. Work Begins on New, Longer Range Boeing 777 Workers at the Boeing airplane manufacturing facility in Everett, Wash. airframecomponents. Authors: Juan Reuben Lazarin*, and Eltahry Elghandour** Students at the Cal Poly Department of Mechanical and Aerospace Engineering were tasked with the challenge of ensuring that a wing structure is within design limits. The thickness of the laminations is partly chosen to make the bending easier. Wing model including the spar and wing ribs used to create the wing. 2) We are now using an improved carbon fiber spar — more carbon fiber than the one tested below. The new wing has a few slight depressions from packing and shipping but is otherwise fine. The diagram shows two spar structures in a human-powered plane. The bulletin mandates eddy current inspection of the spar by personnel with NAS 410 Level II or Level III. FAA Calls for Cessna 210 Wing Spar Inspections. The wing spar has a manufacturing splice at the strut attach point on strut-braced airplanes. The ribs are attached to the spars and the ribs produce the airfoil shape. They give each wing the strength to take the bending load for lift. Each wing assembly contains four pins: forward upper, forward lower, aft upper, and aft lower. If the spar is out of alignment, there will be a ridge. Shipped From: Global ; QTY: Now save save $0. STEVE ELLS delves into the history of Cherokee wing spar cracks and investigates inspection methods. I like these shots. The completed spars. August 6, 2007: Finished riveting right wing skeleton : Pulled left wing off jig, mounted right skeleton. Angled spar flanges are used along with stringers to stiffen the skin. Again do not glue. We are issuing this AD to detect and correct corrosion in the wing root area of the left and the right main wing spars. Strength of Single-spar Wing Mooney MSE (J model) with 30 of the factory employees on it. As can be seen, the new spar is a solid web out to the wing tip and the wing attach fittings are much larger. (painted) The Iron Cross MK III $69. AMOC-1, Rev. The proposed ADs affect twin Cessna 401, 402, 411, and 414A airplanes. As I recall, we assumed a wing spar could take a bolt hole to bolt hole full thickness crack without concern. Composite wing spar design Composite wing spar design Samp51 (Aerospace) (OP) 14 Sep 08 15:09. Sep 18, 2017 | Boeing Commercial. A spar in my open class plane, 50 inches long, weighs 7. The spar webs and caps are collectively referred to as the wing spar. · (obsolete) A bar of wood used to fasten a door. Wing Spar AD Messages. Selection of the spar position 7. The only armament able to be carried was eight. The only way to fix the spar is to change the whole center section wing spar. Spar caps and stiffeners are located to the web in the first assembly jig (AJ1) with drill templates used to place fastener holes. New RV-3B wings have standard 15 gallon per side wing tanks, attached to the spar with screws and bolts so they may be removed for repair without taking a wing off the fuselage. All rivets look good and none had to be reworked. GREAT NEWS-the FAA today issued a change to the Wing carry through spar inspection and eddy current AD (20-03-16) An alternative method of compliance (AMOC) issued by the Wichita office of the FAA has extended the required completion date for the two inspections to September 9, 2020. On nine other similar PA-28R-201 aircraft, no cracks were located. By Julie Boatman. Something will have to change, The tail dragger airplanes will have to have some special consideration on how to handle the forward fuselage skin reinforcement. The slot is the full 17" length of the spar and goes nearly all the way to the top side of the wing. , and a moment of inertia about its neutral axis of 2. Drilled Left Rear Spar, J3 Metal Spar, PA-11, PA-18-95. AOPA To Retire Online Flight Planner. Brand Name: SonicModell Material: EPP Color: Black Includes. This page is a work in progress. The tailplane is carried on a spar cantilevered from the cockpit area, and the wing-spars define the wing structure. He bought an L-164 kit in 2010 but seriously questioned the wing strength issue on this aircraft after the 2006 NTSB report and a similar occurrence in Canada in 2009. around three wing spars, front, center and rear. Photographs of layup of a 757 main wing spar at Boeing, Inc. CENTURY Spar Caps. Wing spar, central spar and central/wing. In this video we invited Brad and Josh Chojnacki from BJC Consulting to demonstrate their Eddy current testing equipment to help determine the state of your airplane wings and spars. Slide the right wing in with an assistant. For example, ribs that are located entirely forward of the front spar that are used to shape and strengthen the wing leading edge are called nose ribs or false ribs. Installed bolts in spars per build manual/plans, starting with the three critical factory drilled holes for wing pin bushing alignment. You may not agree with how. Wing Ribs: The ribs are spaced equidistant from one-another (as far as is practical) and help to maintain the aerodynamic profile of the wing. The primary use for this wood will be wing spars, but Ron will also use it for "window frames and stringers and stuff like that, but the primary aim is spars. · (obsolete) A bar of wood used to fasten a door. I know that I can unite all ribs, spars, etc. The SPAR-17 is a 7. Inboard Spar Assembly 5102310-502 12,000 Wing Spar Assembly 5201004-501 12,500 Wing Outboard Spar Assembly 5201189-501 12,500 Shoulder Bolt 901044-2 7,250 IV. Goes pretty far before that sickening SNAP. The A400M and A350 spars: Different by design. The Renegade bears 67 square feet of sail on a bendy wing spar, making it a powerful racing yacht in a small package. As currently proposed, they would affect the following aircraft models:. By Julie Boatman. WING SPAR SET FOR He177 $14. A wing spar joint is provided for coupling the inboard ends of a right wing spar and a left wing spar. 1 (2/16/10) © 2009 Zenith Aircraft Co. I am bulding it out of composite materials and want to replace the wooden spar with a composte one, made out of carbon fiber and either a honeycomb core or foam core. PA-28 AD Wing Spar Inspection Aircraft Structural Inspections has performed the PA-28 Wing Spar Eddy Current Inspection. This wing is designed with 3˚ of washout, from 3. Doyle 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference January 2017. 11 aboard a Cessna 402C used by a commuter airline. 9 to 35,327. (6) Repeat Items 3 to 5 for all other spars. The outboard wing spars are built up "C"-beams with spar cap angle extrusions at the top and bottom. CX5 Wing Spars. Because both later-model Cessna 210s and Cessna Cardinals share a similar wing design, that is, a wing with out struts, the wing spar on both aircraft have to support much higher loads than some of Cessna’s other aircraft such as the Cessna 182 and 206 that have a semi-cantilever wing design. Again do not glue. The wing spars were rather simple to complete. The proposed AD was prompted by a fatal accident last year involving the separation of a wing from an Embry-Riddle Aeronautical University-operated PA-28-R-201 with 7,690 flight hours. Here is a copy of Service Memo 3A which has the procedures for splicing a Piper spar outboard of the lift strut fittings. , facility kicks off with wing assembly for the first 737 MAX flight test airplane. Take a look at the Boeing 787, for example. 8% of the gross weight, or. The spars are long, heavy pieces that run from wing tip to wing tip along the leading edge and near the middle of the wing. All rivets look good and none had to be reworked. The inspection calls for the inspection of two of the inboard bolts. Aircraft Structural Inspections has performed the PA-28 Wing Spar Eddy Current Inspection. I googled "P-51 wing spar" and didn't find a clear picture of what I'm after. 015 in wing skin shear 290 psi Wing spar weights. Here are the compression members that keep the spars separated in flight! Aileron cross bracing structure. Aircraft with wood wing spars may have wood or metal ribs while most aircraft with metal spars have metal ribs. Non-compliance with this service letter may result in undetected crack(s) in the carry-thru spar, which can result in structural failure of the carry-thru spar. Drilling rear wing spars All 4 rear wing spars have been drilled using spar drilling jigs. If may look like there is a ridge under the bracket (from the cap), but it actually sits nearly flush. Wing Ribs:. Aviation News March 2, 2020. The shear, in turn, is the integral of the running load across the spar. Photo of old spar with cracks and bent ribs. March 2020 Eddy Current Wing Spar Inspection. Spare part for SonicModell Mini AR. FAA proposes airworthiness directive on Piper wing spars FAA proposes airworthiness directive on Piper wing spars December 20, 2018 By Dan Namowitz Editor's note: This article was updated with a link to the proposed Piper wing spar AD published in the Federal Register on Dec. Twelve different assembly jigs were used to assemble these six spars. The wing concepts are classified. The thickness of the laminations is partly chosen to make the bending easier. The above 4 shots show N7079G at Holman Field during work to repair her wing spar. My goal is to have the easiest construction with the strongest spar. The Senate on Monday convened for the first time since March 25 as Democrats and Republicans clashed over the health of senators, as well as GOP efforts to confirm federal judges amid the. Fuselage is fastened to the Wing Spars to hold in place. It is from a mid 1970's Cessna Cardinal. OEM replacement parts for all Quicksilver Aircraft The "Q" is for our inventory control and is followed by the "Quicksilver Part Number" From Your Assembly Manual. In a fixed-wing aircraft, the spar is often the main structural member of the wing, running spanwise at right angles (or thereabouts depending on wing sweep) to the fuselage. Choose White or Black. It is a very easy tool to make and uses two 42 blind rivets and one solid rivet from the spars. Brand Name: SonicModell Material: EPP Color: Black Includes. Outboard Spar construction. Zodiac 601XL & 650 Zenith Aircraft Company www. This changed in 1990 when American Champion Aircraft redesigned and certified this structure with aluminum spars. Whatever carbon fiber wing spar styles you want, can be easily bought here. As I recall, we assumed a wing spar could take a bolt hole to bolt hole full thickness crack without concern. Use the glue sparingly: a small amount will do the job; too much adds extra weight and flows everywhere, making the sanding job more difficult. Boeing had to devise a way to manufacture two wing spars which were the longest and heaviest Duralumin extrusions ever made. Upper Rear Spar Modification Mandatory for all Flitzers to accommodate aerobatics and an increase in AUW to 800lbs. The wing concepts are classified. (painted) The Iron Cross MK III $69. Twelve different assembly jigs were used to assemble these six spars. You may repair wooden wing spars as you have been told in this group. Read more here. Here's a stress test on the wing of a DG Flugzeugbau DG-1000, a two-seated glider with a 20-meter wingspan. This set is designed specifically not to require any modifications to the original plastic kit. Having experience/knowledge of putting the wings on five 601XL airplanes, It will not be possible to add a. There is a gap of about 10 to 12 degrees between the two parts. The plans are for the wood wing but Wag's metal spar supplement has the shims like your wing has so not to worry about that. The Bearhawk wing spars are built very similar to the Van's RV series wing spars. New Right Wing Spars Today on my way home from visiting the grandkids in New York I stopped to visit Bryan Cotton in Elmira. 10-27-2013, 07:32 PM. spar is an important structural member of the wing- running from root- fuselage end to tip of the wing; In big transport aircraft there are 3 spars , front/ rear and mid spar too. Testing: XB-1's wing spars will "disappear" from sight when the wings are closed, but the team will still be able to "see" inside with ultrasonic imaging. I laid the main spar on my work bench and drilled a “pattern” center spacer using the pilot holes on the spar web. Design, Analysis and Testing of Wing Spar for Optimum Weight. Both aboard died and the airplane was destroyed. This is the strut attach point on the spars. Aeronca Wood Wing Rear Spar - Left, 7GCB, 7GCBA, 7GCBC 5270L $710. Piper Aircraft has issued Service Bulletin 1345 requiring inspection of the main wing spar on Piper Arrow models to test for unseen cracks in the spar. and the main spar represents 80% of the wing's total strength, a complete wing can support 1100 lbs. Univair and WagAero sell these kits. Having experience/knowledge of putting the wings on five 601XL airplanes, It will not be possible to add a. The calculation of the percentage of load on a two spar wing has a lot of factors in it, too many to detail here, but follow this: Many classic aircraft have wing cords right around 60″ like a Piet. Standard kit wing skins are not pre-punched. The engines are suspended from the spars. FAA proposed twin Cessna wing spar ADs The issue: On May 15, 2003, the FAA proposed two airworthiness directives mandating inspection of twin Cessna wing spar caps for fatigue cracks and installation of a Cessna manufactured spar strap modification kit. WING KIT CONSTRUCTION - Page 4. Glued Ribs to Spars: Wing Ribs 11-20 Completed: Compression Struts: Wing Ribs 21-30 Completed: Drag and Anti-Drag System: Wing Rib Reinforcement: Spar Packing Strips: Scarfed Wing Spar Cap Strips: Rib "Cheek Blocks", New Jury Strut Brackets, Foam Wing Tips: Sanded Wing Ribs: Bending Wing Skins: Front Wing Spar Frames: Gluing Wing Skins: Front. The general run for pitting is that if any one pit after cleaning out all the corrosion and getting down to new material is to reject the spar if the depth. The wing spar ABD of a light plane is made from 2014–T6 aluminum and has a cross-sectional area of 1. The Senate on Monday convened for the first time since March 25 as Democrats and Republicans clashed over the health of senators, as well as GOP efforts to confirm federal judges amid the. Most of the inspections called for in the Beechcraft SIRM chapter 57 should take no more than 1 day with at least 1 mechanic to pull the necessary bolts and open up the appropriate areas for inspection and 1 NDT NAS level 2 Technician to perform the NDT inspection. One end is considered as fixed and the load was applied to the other end that is the free end by constraining all the six degrees of freedom. July 27, 2017 Posted by: RSIS;. Much less expensive to purchase from Motion than to buy 8mm and 10mm carbon tubes from some where else. In a fixed-wing aircraft, the spar is often the main structural member of the wing, running spanwise at right angles to the fuselage. 058" aluminum tube, the same material OEM ribs are made of. Zodiac 601XL & 650 Zenith Aircraft Company www. With the P2s coming up on their flight hour limits I don’t think Neptune will want to invest that kind of money in bringing Tanker 10 back into service. The wing spar is pre-installed, control surfaces are pre-hinged, and the body tube is pre slotted for the vertical stab. There have been cases of substantial corrosion on both sides of the Main Spar and corrosion on the Steel Attach Plates on the Rear Spar. When operational for BAe, this single machine will produce up to 16 wing spars at a time, carved whole out of aluminum plate stock in just 25% of the time it now takes using multiple machines and setups. Cutaway of the Comet indicates that there is a front and rear spar that go slightly above the engine ducts and are about 50% span long. This research work investigates graphite-epoxy design for light weight high performance structure of an aircraft wing spar using computational techniques. Clecoed right wing ribs to spar, mounted on blocks : 1. I think the wing spar inspection just involved inspecting the skin for fuel leaks. The next thing I needed to do was lay the formers that would hold the shape of the airfoil while simultaneously housing the wooden spar. Make all of your marks first, before attaching any ribs. Although hard mounting was a relatively straight forward technical issue for the designers to solve, they nonetheless had to ensure that, for safety, the turbine sections would be kept aft of the wing's rear spars and this is what gave the first generation 737s their characteristic long power plant housings. The main wing spar is one of the most critical load bearing components of any winged aircraft. Wing Rear Spar - Inspection 8/2009 Applicability: All models. I was originally interested in the Beeches due to their good cabin size and affordable market value. The spar is constructed using single. For the example here, I will use a double taper planform: In general, the bending moment (what we are interested in) is the integral of the shear across the spar. The overhead cabin structure is quite a bit beefier to accept the full load. Re: Broken wing spar In the old Cam 18 regulation it says: A joint in a wood spar has to have a Taper of 20 to 1 = 1 high 20" long. Other structural and forming members such as ribs may be attached to the spar or spars, with stressed skin construction also sharing the loads where it is used. On 14 September 2010, FAA wrote a letter (original version, updated version) to SSA containing factual information about the accident glider, the construction of the wing spar, inspection methods, and the justification for AD 2010-18-05. Establishing Wing Dihedral - Wing Spar Drilling Jig by Charles' and Rick's (from - UltraCruiser Blog Charles Snyder) Vacuum Forming - My Nose Skins includes vacuum forming. They correspond to the longerons of the fuselage. WING STRUCTURE has axial members (stringers), bending members (spars), shear panels (spar web, skin), ribs (in-plane. GREAT NEWS-the FAA today issued a change to the Wing carry through spar inspection and eddy current AD (20-03-16) An alternative method of compliance (AMOC) issued by the Wichita office of the FAA has extended the required completion date for the two inspections to September 9, 2020. Pete Bowers Centennial Fly Baby Companion Guide/Article 2/Page 2 This Companion Guide is written to accompany the second of Pete Bowers’ Fly Baby construction articles in EAA SPORT AVIATION magazine. Below is a C177 wing (upside down). This is one of the first times the RTM technology has been used on this scale.